I frequently call out waste yarn in my patterns. This is just a substitute for a stitch holder. Personally, I don't use stitch holders.
PU1 under JSSBO - Jill Wolcott Knits
Just Landed: Coastal by Elemental Affects - fibre space
elizabeth kay booth – ELIZABETH KAY BOOTH
How to Work Waste Yarn Into Your Knitting
Waste Yarn Placeholder Tutorial, Holli Yeoh
The Independent Stitch: Knitting
Ischia Scarves - Jill Wolcott Knits
Waste Yarn Placeholder Tutorial, Holli Yeoh
Knit with Henni